The origin of resonance in the vertical component of earthquakes recorded on soft soil at Wainuiomata, New Zealand

  • W. R. Stephenson GNS Science, Lower Hutt, New Zealand

Abstract

Occasionally-observed resonances in the vertical components of earthquakes recorded at the Wainuiomata, New Zealand, soft site, are likely to be manifestations of the Airy phase of fundamental-mode Rayleigh waves which traverse the site. These packets of waves exist only when a soft, water-saturated layer of soil overlies a substrate with a much higher velocity. Other soft sites in Wellington also show the phenomenon, which may have implications for hazard estimates.

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Published
2011-03-31
How to Cite
Stephenson, W. R. (2011). The origin of resonance in the vertical component of earthquakes recorded on soft soil at Wainuiomata, New Zealand. Bulletin of the New Zealand Society for Earthquake Engineering, 44(1), 19-30. https://doi.org/10.5459/bnzsee.44.1.19-30
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Articles